The Mingo people are an Iroquoian-speaking group of Native Americans, primarily Seneca and Cayuga, who migrated west from New York to the Ohio Country in the mid-18th century. Some Susquehannock survivors also joined them, and assimilated. Anglo-Americans called these migrants mingos, a corruption of mingwe, an Eastern Algonquian name for Iroquoian-language groups in general. The Mingo have also been called “Ohio Iroquois” and “Ohio Seneca”.

Most were forced to move from Ohio to Indian Territory in the early 1830s under the federal Indian Removal program. At the turn of the 20th century, they lost control of communal lands when property was allocated to individual households in a government assimilation effort related to the Dawes Act and extinguishing Indian claims to prepare for the admission of Oklahoma as a state.